Safety razor and safety razor blade clamp



Aug. 17, 1948. A. w.` BRENNINGER 2,447,310,

SAFETY RAZOR AND SAFETY RAZOR BLADE CLAMP Filed June l0, 1943 FIG .9

w'BY' ATTORNEY.

Patented ug. 17, 1948 i UNITED --KS'TATE'S SAFETY RAZOR AND SAFETY RAZOR BLADE CLAMP Alfred William Brennixiger, Philadelphia, Pa.

Application June 10, 1943, Serial No. 490,364

4to .provide a safety razor which requires a minimum of metal.

lAnother object of the invention is to provide -a safety razor which is relatively inexpensive to manufacture.

:safety razor having a .blade which can be quickly and easily detached from and secured to the holder. f

Another object of the invention is toprovide a safety razor having a minimum number of parts. 1

Another object of the invention is to provide a safety razor which is easily cleaned.

Another object of the invention is to provide an improved safety razor blade requiring a minitured in quantity production.

y According to the invention, the blade holder, comprises a handle and a generally rectangular blade support part having the usual guard serrations at the forward edge, the blade support part being inclined to the handle. The blade-is .of `non-perforated rectangular form and is relativelyV narrow. rThe blade is clamped within a narrow metal element `extending substantially the length of the blade and generally U-shaped in Across section. This element is formed to detachably engage the blade holder. In one form of the invention, the ends of the' blade support part vof the holder and the clamp element have interengaging tongues and grooves formounting the clamp element on the holder. In another form of the invention, the blade support vpart ihas a longitudinally extendingange adapted to project within a generally U-shaped groove formed .in the blade clamping element. v

They nature and advantages of my invention will become increasingly apparent from a consideration of the'following description and drawings,

wherein:

Fig, 1 is a perspective view of a blade holder I :may employ;

Fig. 2 is a plan view of the holder of Fig. 1 with 'a blade and blade clamp element mounted zthereon; l

Fig. 3-is a cross sectional view of the blade and blade clamp element illustrated in Fig.;2 taken :along the line 3 3;

roxanne. (ciao-51) to safety razorsand more l Another object of the invention is to provide a 31.0

mum of nretal and which can be easily manufac- 112,0 l

Fig. 4 is a plan view of a modified holder, modii and blade blade, blade l 5 is a longitudinal sectional view-lofl the blade and blade clamp: element illustrated. in Fig. 4 taken along the line 5 5; y I 5 Fig, 6 is a plan view of a further modied holder, modified blade clamp element,` and blade I may employ; l v n l Fig. '7 is a side-elevational view of the holder of Fig. 8 is asection of the blade clamp element `shown in Fig. 6 taken along the line .1 :Fig 9-is a cross-sectional view of a double-,edge blade and blade clampy elementV generally similar to the blade clamp elementillustrated in Fig. 3.; Fig. l10 is a plany view of a double-edge blade and blade clamp elementgenerally similar to that illustrated in 5; l l v Fig. 11V is a fragmentary perspective view of the blade holderillustrated in lFig. 4; and. f f- Fig.. 1,2 isa partial longitudinal section taken along. line 5-5-,of Fig. lshowing relation of the clamp element,` and blade vsupport'.

Referring vnow to the'drawngs, and more particularly to Figs. 1, 2, and 3, the blade holder inldicatedgenerally at I0 comprises a blade support upstanding abutments for engaging the forward gor cutting edge of theblade. Each-end-lof part II is recessed t-o form rectangular` grooves I6 for engaging down-turned tongues Il of the blade clamping element I8. The blade is relatively narrow, the widthbeing preferably 25 per-cent or less of the blade length.y Theblade clamp element I8 is preferably formed of thin sheet'metal and is of U form in cross section to receive and grip the blade with the cutting edge oi' the blade, indicated at I9, extending beyond the element. The tongues Il may extend from the top or bottom ply of the element I8 but as illustrated I preferably have the tongues extend from the top ply to -overlie the blade ends.

The .confronting faces of depending tongues I 'I are normally 'spaced apart longitudinally a slightly less distance than the longitudinalv dis'- tance between the grooves I6 of support part II' so thatY it is necessary to lslightly spread the ton-1 gage the rear edge of the grooves so that bacle:

ward movement of the blade relative to part I I is prevented and relative forward mouement'is mestrained by the abutments I4. For ease ingriip .f

Any suitable handle may be provided fior I'I and in the holders illustrated the handle is permanently secured at arrangle of approfimate- 'Ilyjj "degrees although -it--is' understood that vthe handle-may 'be detachably isecured and lthe relative angularity betweenpart IiI and-the handle I-rfixavfy-lloealtered as Ldesired.- In ythe holders-illustrated a `metal-s'hanlr 22 has a reduced stem-which is projected through part I I and is ilush with the top surface thereof. 'The shank may 'be soldered or otherwise secured to part II. The lower end ofjtihejshanl -has a reduced portion pressed into a holdin-thegrippi-ng portion 23 -of the fhandle. Portion 23 may beformed of synthetic resin or other suitableimaterials and is preferably hexagonal i-nV cross-section or -serratedto :prevent 1rotation orl slippingwhilefg-ripped.

I n "Figa-4, I'5., `andbl TI vhave illustrated -a modi- 'iled form-of safety razorgenerally similar tothe razor illustrated in Figs. l to 3=inclusivefbutin this construction grooves l*24 vare formed in the blade clamping `elex'nentand Aupstanding tongues 2'6yare provided atI the lends-of; the blade v support 'part v`for engagingthegrooves. 'The tonguesare pref- `erablylveryslightly less-in -width-thanfthegrooves Abutments 21 at each endA of the blade support `part 12B engage the putting `edge 4of fthe blade.

'These'abutments andabutmentsill shown in flfarefsubstantially fluslhfwith thetop surface vof :the-blade. l `The upstandirig tongues lli-Ii ygrip the Lbladef-clarnping element irictionallyl at thefgrooves *2'4 fto maintain ithe blade and clamping-element lseated fon theholder support-part during use vof 'the rarer.` "Thsmay-be effected by inclining the tongues slightly towards each othersothat the T'tongueends are `normally slightlyyclosertogether Z'tlhan. fthe longitudinal -distance between the fgrooves j2f4 s0 "that'the tongueswill "be v forced 355 `|slightlyapart when 4positioning the vblade and lclamp@element -on the holder.

Theblade clamping element 29 =is rU form-in 4longitudinal cross-section and -as illustra-ted -in y, Fig.:5i.the end portions .are extendedbeylond the blade 12.5 .and :preferably :crimped `-at the ends'ifi iremoterfrom-theu bend-to securethe bladef25=to lthe element-2 9. I i 1 lInthe modification lillustrated in :Eigsufto inltl-Sivethe bladesuppmt 'portion 3.I'-:is.-reversely Abent-,tosprovidefa:loneitucluially! extendingflange ,The'bladeflclamplngfelement has afportioni fof Ut oross-sectionzwhich clamps -theifblaxlel and. a

reversely bent portion r34iforming :a rgroovet. v ATlfiefblade' isimounted byfpressi-ngfilange@withnormali, .tne-zflangec iscurvedtand portion ..34`eisusimilarlyacurved torgseatwnf'thfe .flange when lthebladefispropcrly mounted :fPortinmS off. the

l tively tight sliding contact with flange 32 and the base 31 of the blade mounting portion.

Fig. 9 illustrates a blade generally similar to the blade illustrated in Fig. 3 but in this modification the blade is provided with two cutting edges as indicated at 38 and 39. The blade clamping element may comprise an upper part having down-turned en@ tongues 42 and a lower' Dart 43 press-fitted between tongues 42.4

Figl0 illustrates a blade generally similar to the blade shown in Fig. 5 but wherein double cut- 'ting edges are provided. The blade clamping element Mgggmaygcomprise a single strap of U form. longitudinally with the strap ends crimped tggethenat to. secure the blade. Grooves 41 are formed in "the'clamping element ends to engagenupstandingftongues on the holder.

YThe b lades described which comprise the blade `proper and the blade clamping element require a relatively small amount of metal, the blade proper and `.clamping .element Ican be `economically and :easily assembled, and ythe blade` can "bexeasily cleaned. The blade can be quickly mounted :on and removed fromfthe holder and will remain iti-proper .operative position during use of the razor.

-ttwill =be understood that in the various modlrications `disclosed with the exception' of-:the modification illustrated in Figs. 6 to, y'inclusive .that due to the relative spacing of the 'interen- 4gaging :tongues andy grooves endwise pressure is `exer-tedon ,0r=by. the tongues when the blade and clamp element are positioned on the holder. 1 `,he'b'lades formed. :by the clampingielement andfblade .proper'have been shown as comprising -two parts but it is understood that they may be formed asia single'ipart, and particularly the :blades illustrated -in Figs. -2 and 4.

. Although-fihave shownand described preferred formsof -my invention-I contemplate that numercus and extensive departures may be made therefrom :withoutVv departing yfrom -vthe` spirit lof my invention and-.the scopelof the appended claims.

' `l@Vihat .claim'ris-z i `1. ,A safety razorv comprising a blade support part, a blade, a blade clamp element lincluding -top .and "bottom-plies engaging the top and fbotitom .surfacesvof ithe 1blade; ythe blade support and sblade clampelement ihaving interenga'ging tongue yand 4recess portions formed at the ends thereof, andthetongue portions being resilient and-nor- .mally vspaced to be -forced slightly apart upon engagement with the recess portions whereby the blade andfclamp elementare detachably secured 'tothe support. y

2. A safety razor comprising a generally rec- 1tarrgular-blade support having Vupstanding abutvments at .the forward l edge .thereof and recessed rsendfportions,.a'blade, a blade' clamp element including top and bottom `plies .engagingl the rtop "andibottom surfaces of 4the blade and substantially co.eXt-ensive vin length with lthe blade-the .blade 4cutting kedgeextending forwardly of the clamp element, the clamp element having de- :pending 7resilient Atongues at each end-thereof normally spaced apart slightly less thanithe Ydisftance .between .the recessed portions., and the @blade andffclampelement being detachably secured to the support by engaging the blade cut- @ting-:edge vwith fthe support abutments-and "dirsfposingftheclamp elementtongues withinthe recessed portions of the support whereby the tongues grip the support. with endwise pressure v '1t-t3. fsafetymazor. comprising a' blade holder'inbladeciamping elementfpreierabtyfmakeslarelaf7-5 cluding a generally rectangular blade supportand a handle extending therefrom, the support having recessed end portions and a rounded recess in the rear edge thereof, a blade, a blade clamp element including top and bottom plies engaging the top and bottom surfaces of the blade and depending resilient tongues at each end thereof adapted to seat at the recessed end portions of the support, the tongues' being normally spaced to be forced slightly apart and exert endwise pressure on the support when seated and the clamp element overlying the said rounded recess whereby the clamp element may be gripped for detachment of the clamp element and blade from the Iholder.

4. In a safety razor comprising a blade holder having a iiat blade support the suboombination comprising a generally rectangular blade, a clamp element including top and bottom plies engaging the top and bottom surfaces of the blade and extending slightly beyond th'e blade ends, the blade cutting edge extending forwardly of the clamp element, the clamp element having resilient tongues extending angularly from each end thereof adapted to detachably engage said blade holder, and the tongues being normally spaced relative to the holder to exert endwise pressure on the holder when engaged therewith.

5. In a safety razor comprising a flat blade support with a resilient upstanding tongue at each end for gripping a blade and clamp element, the combination comprising a generally rectangular blade, a clamp element including top and bottom plies engaging the top and bottom surfaces of the blade and extending slightly beyond the blade ends, the blade cutting edge extending forwardly of the clamp element, the clamp element having recessed end portions adapted to seat said resilient tongues of the blade support, and the recessed portions being spaced to slightly spread the tongues when seated.

6` A safety razor comprising a holder having a generally rectangular support part and a handle, a resilient tongue extending from the upper surface fof the support p-art, a blade, a blade clamp element having plies overlying the upper and lower surface of the blade to leave the blade cutting fedge exposed, the clamp element having a portion adapted to receive the support tongue, and the tongue being formed to exert resilient pressure against said clamp element receiving portion when the blade and clamp element are seated on the holder to grip the clamp element between said tongue and a portion of the holder spaced from the tongue.

'7. A safety razor comprising a holder having a generally rectangular support part and a handle, a blade, a blade clamp element having plies overlying the upper and lower surface of the blade to grip the blade and leave the blade cuttingedge exposed, and the support part and clamp element having interengaging portions with at least one of said portions being resilient and adapted to exert frictional pressure against its associated portion when engaged therewith whereby the clamp element and blade may be seated upon and removed from the support part solely by manual pressure.

ALFRED WILLIAM BRENNINGER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 

